SKU: WCF205-190
Wehrli 2017-2019 L5P Duramax Intercooler Outlet Boot Adapter
This billet aluminum beadroll adapter flange installs on the outlet (passenger cold side) of the stock intercooler on 2017-2019 Chevy Silverado and GMC Sierra 2500/3500 HD trucks with L5P Duramax engines. It converts the factory slip/clip ring to a machined bead roll joint for secure connection of 3.5-inch silicone boots with T-bolt clamps. Perfect for aftermarket turbo kits and custom high-flow intercooler piping setups that demand reliable airtight seals and boosted performance.
Key Features
- Billet Aluminum Construction: Machined from solid aluminum for strength and resistance to boost pressure without cracking or leaking.
- Precision Bead Roll Flange: Exact fit to stock intercooler outlet ensures seamless transition to 3.5-inch piping for unrestricted airflow.
- OE Adapter Design: Directly replaces factory slip joint allowing easy upgrade to silicone boots and T-bolt clamps on custom builds.
- High-Flow Compatible: Supports aftermarket intercooler pipes and turbo kits by providing a robust bead roll connection point.
- Passenger Side Specific: Targets cold side outlet for optimal cooling efficiency in L5P Duramax applications.
Product Notes
- Intended for custom fabricated high-flow intercooler piping and turbo kits adapting stock intercooler to 3.5-inch silicone boots.
- Requires separate 3.5-inch silicone boot and T-bolt clamp for complete assembly.
- Ships securely wrapped to prevent damage during transit.
Installation Notes
- Professional installation recommended.
- Remove OE slip/clip assembly from intercooler outlet and bolt on adapter flange using factory hardware.
- Compatible with stock intercooler mounting points no modifications needed.
This Part Fits
| Year | Make | Model | Submodel |
|---|---|---|---|
| 2017-2019 | Chevrolet | Silverado 2500 HD | High Country |
| 2017-2019 | Chevrolet | Silverado 2500 HD | LT |
| 2017-2019 | Chevrolet | Silverado 2500 HD | LTZ |
| 2017-2019 | Chevrolet | Silverado 2500 HD | WT |
| 2017-2019 | Chevrolet | Silverado 3500 HD | High Country |
| 2017-2019 | Chevrolet | Silverado 3500 HD | LT |
| 2017-2019 | Chevrolet | Silverado 3500 HD | LTZ |
| 2017-2019 | Chevrolet | Silverado 3500 HD | WT |
| 2017-2019 | GMC | Sierra 2500 HD | Base |
| 2017-2019 | GMC | Sierra 2500 HD | Denali |
| 2017-2019 | GMC | Sierra 2500 HD | SLE |
| 2017-2019 | GMC | Sierra 2500 HD | SLT |
| 2017-2019 | GMC | Sierra 3500 HD | Base |
| 2017-2019 | GMC | Sierra 3500 HD | Denali |
| 2017-2019 | GMC | Sierra 3500 HD | SLE |
| 2017-2019 | GMC | Sierra 3500 HD | SLT |
Why Choose Wehrli Custom Fabrication?
- Specializes in L5P Duramax performance components with proven track record in diesel upgrades.
- CNC machined parts deliver consistent quality and exact tolerances for leak-free performance.
- Engineered in the USA for durability under high boost and extreme towing conditions.
Frequently Asked Questions
- Q: Will this fit my 2017-2019 L5P Duramax Silverado or Sierra?
- A: Yes it bolts directly to the stock intercooler outlet on all listed 2500 HD and 3500 HD models with 6.6L L5P engine.
- Q: What material is the adapter made from?
- A: Billet aluminum machined to precise specifications for strength and heat resistance.
- Q: What is included and do I need additional parts?
- A: Adapter flange only. Pair with 3.5-inch silicone boot and T-bolt clamp sold separately. Uses factory hardware.
Shipping & Handling
- Method: UPS Ground or USPS Priority
- Availability: In stock – ships same or next business day
- Packaging: Foam protected in 5 x 5 x 3 inch box
- Weight: 0.4 lbs
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